JPS6469200A - Wide band elastic wave all directional converter - Google Patents
Wide band elastic wave all directional converterInfo
- Publication number
- JPS6469200A JPS6469200A JP63201814A JP20181488A JPS6469200A JP S6469200 A JPS6469200 A JP S6469200A JP 63201814 A JP63201814 A JP 63201814A JP 20181488 A JP20181488 A JP 20181488A JP S6469200 A JPS6469200 A JP S6469200A
- Authority
- JP
- Japan
- Prior art keywords
- vibrating film
- parts
- same
- permeability
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R15/00—Magnetostrictive transducers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance
- G01H11/04—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance using magnetostrictive devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
PURPOSE: To improve the performance characteristics of a transducer by adding the section of high permeability in the same form as a magnetic distortion vibrating film. CONSTITUTION: A continuous polarizing means is provided with outer and inner faces in the almost same form as the vibrating film and that outer face is equipped with high-permeability parts 40 and 42 existent near the back of the vibrating film and a permanent magnet 38 arranged in contact with the parts 40 and 42. Namely, it is preferable to form the magnetic distortion vibrating film semi-spherical, to form the high-permeability parts 40 and 42 semi-spherical as well, to fit the parts into that hemispherical vibrating film, to compose the permanent magnet 38 of one flat ring at least, to make the diameter of this ring a little shorter than the diameter of parts 40 and 42 and to arrange the ring inside these parts 40 and 42. Thus, a uniform magnetic field is formed onto the magnetic distortion vibrating film and the respective surface elements of the vibrating film can exactly react to the same acoustic wave or the same electric signal with the same amplitude.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8711598A FR2619481B1 (en) | 1987-08-14 | 1987-08-14 | WIDE BANDWIDTH ELASTIC WAVES OMNIDIRECTIONAL TRANSDUCER |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6469200A true JPS6469200A (en) | 1989-03-15 |
Family
ID=9354218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63201814A Pending JPS6469200A (en) | 1987-08-14 | 1988-08-12 | Wide band elastic wave all directional converter |
Country Status (5)
Country | Link |
---|---|
US (1) | US4862430A (en) |
EP (1) | EP0303547B1 (en) |
JP (1) | JPS6469200A (en) |
DE (1) | DE3865581D1 (en) |
FR (1) | FR2619481B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010178017A (en) * | 2009-01-29 | 2010-08-12 | Taisei Corp | Oscillator |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8803776U1 (en) * | 1988-03-19 | 1988-05-11 | Klein, Siegfried, Dr. Prof., Paris | Acoustoelectric transducer |
US4951271A (en) * | 1989-04-17 | 1990-08-21 | The United States Of America As Represented By The Secretary Of The Navy | Flextensional hydrophone |
FR2648664A1 (en) * | 1989-06-15 | 1990-12-21 | Commissariat Energie Atomique | OMNIDIRECTIONAL SPHERICAL MEMBRANE SPEAKER USING A MAGNETOSTRICTIVE RIBBON |
US20060196723A1 (en) * | 2005-03-03 | 2006-09-07 | White Fred I | Balloon speaker asembly |
CN102353444B (en) * | 2011-10-08 | 2012-12-19 | 哈尔滨工程大学 | Resonance type vector receiver under deep water |
FR3003113B1 (en) * | 2013-03-11 | 2015-04-10 | Dcns | SYSTEM FOR GENERATING SOUNDS IN WATER |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1635045A (en) * | 1922-10-31 | 1927-07-05 | Kauch Robert | Ground-speed indicator |
US1653045A (en) * | 1926-09-04 | 1927-12-20 | Chase Crowley E | Loud-speaker unit |
GB526641A (en) * | 1938-03-23 | 1940-09-23 | Charles Louis Florisson | Improvements in and relating to vibrators of the magneto-striction type |
BE437610A (en) * | 1939-01-13 | 1940-07-09 | ||
US2728063A (en) * | 1951-02-27 | 1955-12-20 | Raytheon Mfg Co | Pressure polarized transducers |
FR2503515B1 (en) * | 1981-04-01 | 1985-12-27 | Klein Siegfried | OMNIDIRECTIONAL SPEAKER FOR ACUTE SOUND SPECTRUM FREQUENCIES |
DE3138566A1 (en) * | 1981-09-28 | 1983-04-07 | Siegfried Dr. 75009 Paris Klein | LOUDSPEAKERS, ESPECIALLY HIGH-TONE SPEAKERS |
US4782471A (en) * | 1984-08-28 | 1988-11-01 | Commissariat A L'energie Atomique | Omnidirectional transducer of elastic waves with a wide pass band and production process |
US4642802A (en) * | 1984-12-14 | 1987-02-10 | Raytheon Company | Elimination of magnetic biasing using magnetostrictive materials of opposite strain |
-
1987
- 1987-08-14 FR FR8711598A patent/FR2619481B1/en not_active Expired
-
1988
- 1988-08-04 US US07/228,302 patent/US4862430A/en not_active Expired - Fee Related
- 1988-08-11 DE DE8888402096T patent/DE3865581D1/en not_active Expired - Lifetime
- 1988-08-11 EP EP88402096A patent/EP0303547B1/en not_active Expired - Lifetime
- 1988-08-12 JP JP63201814A patent/JPS6469200A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010178017A (en) * | 2009-01-29 | 2010-08-12 | Taisei Corp | Oscillator |
Also Published As
Publication number | Publication date |
---|---|
FR2619481A1 (en) | 1989-02-17 |
DE3865581D1 (en) | 1991-11-21 |
EP0303547A1 (en) | 1989-02-15 |
EP0303547B1 (en) | 1991-10-16 |
US4862430A (en) | 1989-08-29 |
FR2619481B1 (en) | 1989-11-17 |
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